Vocal babbling in songbirds requires the basal ganglia-recipient motor thalamus but not the basal ganglia.
نویسندگان
چکیده
Young songbirds produce vocal "babbling," and the variability of their songs is thought to underlie a process of trial-and-error vocal learning. It is known that this exploratory variability requires the "cortical" component of a basal ganglia (BG) thalamocortical loop, but less understood is the role of the BG and thalamic components in this behavior. We found that large bilateral lesions to the songbird BG homolog Area X had little or no effect on song variability during vocal babbling. In contrast, lesions to the BG-recipient thalamic nucleus DLM (medial portion of the dorsolateral thalamus) largely abolished normal vocal babbling in young birds and caused a dramatic increase in song stereotypy. These findings support the idea that the motor thalamus plays a key role in the expression of exploratory juvenile behaviors during learning.
منابع مشابه
Neurophysiol Jesse H . Goldberg and Michale S . Fee ganglia ganglia - recipient motor thalamus but not the basal
ganglia ganglia-recipient motor thalamus but not the basal Vocal babbling in songbirds requires the basal You might find this additional info useful...
متن کاملVocal babbling in songbirds requires the basal ganglia - recipient motor 2 thalamus but not the basal ganglia
متن کامل
Timing and Prediction The Code from BasalGanglia to Thalamus
When is an inhibitory synapse not inhibitory? In this issue of Neuron, Person and Perkel demonstrate that thalamic neurons can translate extrinsic GABAergic input from the basal ganglia into highly precise patterns of sustained spiking in a circuit that is essential for vocal learning in songbirds. Postinhibitory rebound serves as a mechanism that preserves precise spike timing information, ena...
متن کاملTitle: Differential Contributions of Basal Ganglia and Thalamus to Song 1 Initiation, Tempo, and Structure 2 3
20 Basal ganglia-thalamocortical circuits are multi-stage loops critical to motor behavior, 21 but the contributions of individual components to overall circuit function remain unclear. 22 We addressed these issues in a songbird basal ganglia-thalamocortical circuit (the 23 anterior forebrain pathway, AFP) specialized for singing and critical for vocal plasticity. 24 The major known afferent to...
متن کاملDifferential contributions of basal ganglia and thalamus to song initiation, tempo, and structure.
Basal ganglia-thalamocortical circuits are multistage loops critical to motor behavior, but the contributions of individual components to overall circuit function remain unclear. We addressed these issues in a songbird basal ganglia-thalamocortical circuit (the anterior forebrain pathway, AFP) specialized for singing and critical for vocal plasticity. The major known afferent to the AFP is the ...
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ورودعنوان ژورنال:
- Journal of neurophysiology
دوره 105 6 شماره
صفحات -
تاریخ انتشار 2011